Metal fastener



w. E. WILLIAMS.

METAL FASTENER.

APPLICATION FILED APR. 24, I918.

Patented Apr. 27, 1920.

WILLIAM ERASTUS WILLIAMS, OF CHICAGO, ILLINOIS.

METAL FASTENER.

Specification .of Letters Patent. 1 Patented Apr. 27, 1920- Applicationfiled April 24, 1918. Serial 1%. 230,410.

To all whom it may concern.-

. Be it known that I, .IVILLIAM ERAs'rUs WILLIAMS, a citizen of theUnited States, and a resident of Chicago, county of Cook, State ofIllinois, have invented a new and useful Improvement in Metal Fasteners,of which the following is a specification.

My invention relates to a type of fasteners, shown in my Letters Patent7 No. 1,201,008, of October 10, 1916, and used chiefly to bind end woodsections together to keep them from splitting and to bind separatesections together. The object of the present invention is to produce astrip for a fastener that may be more easily rolled than other sectionsof the type mentioned.

Reference will be had to the accompanying drawing in-which,

Figure 1 is a plan of my strip.

Fig. 2 is a section on line.2-2 of Fig. 1'.

v Fig. 3 is a section on line 3-3 of Fig. 1.-

Fig. 4 is a section on line 4+4 of Fig. 1.

Fig. 5 is a plan of a modi ed form.-

Fig. 6 is a section on line (i -6 of Fig. 5.

Fig. 7 is a section on line 77 of Fig. 5.

Figs. 2, 3, 4, 6 and are on a larger scale than Figs. land 5.

In the drawing, 2 indicates the body of the fastener strip, 3 its sharp-or cutting T edge, 4 its driving edge or back, and 5 the and a space 9on the cutting edge that iscross ribs.

The cross ribs 5 do not extend fully across the strip but terminate at 6near the driving edge and at 7 near the cutting edge;

This leaves a space 8 on the driving edge smooth and free from the crossribs.

The modified form shown in Figs. .5, 6

and 7 differs from that of the other figures only as relates to-thecross ribs 5 In the modified forms the cross ribs-onone' face .areopposite the spaces between the ribs on the opposite face of the stripinstead of opposite each other;

In rolling strips'of this class, where in order to hold properly againstlongitudinal slipping in the wood the "ribs must rise abruptly. from thebody of the strip, the grooves in the rolls wherein the ribs are formed,tend to hold the strip to wind on the rolls, and thus, when the crossribs are of the desired shape, it is hard to roll the strip at all.

By leaving the blank spaces 8 and 9 on maybe arranged to run along thesespaces and force the strips fro'mfthe rolls as fast the edges of thestrip scrapers or lifters as they are formed, thus making the rolling Iof. this strip less diflicult. I may leave a smooth narrow facealong'the central body of the strip omitting the ribs on'this' zoneand'apply the roll-scraper at this place, but -I prefer to leave smoothportions at both edges of the-strip. claimzfj A thin rolled fastenerstrip havin verse ribs rising abruptly from its% faces and extendingonly partly across the strip, whereby the strip has a continuousnon-ribbed longitudinal portion along which lifting members may act toseparate thestrip from the forming rollers. Signed at Chicago, countyof- Cook, and State of Illinois. the- 22nd day of April, 1918." I

WILLIAM ERASTUS WILLIAMS. f Witnesses:

C. PLUMMER. ALFRED E. Roan.

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